US 11,053,345 B2
Polyurethane polymer, method for preparing the same and use thereof
Musong Lin, Guangdong (CN); Tiansheng Chen, Guangdong (CN); Qiang Fu, Guangdong (CN); Shengping Fan, Guangdong (CN); and Lei Peng, Guangdong (CN)
Assigned to ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID CO., LTD., Guangzhou (CN)
Appl. No. 16/88,078
Filed by ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID CO., LTD., Guangdong (CN)
PCT Filed Dec. 27, 2017, PCT No. PCT/CN2017/118900
§ 371(c)(1), (2) Date Sep. 25, 2018,
PCT Pub. No. WO2019/037369, PCT Pub. Date Feb. 28, 2019.
Claims priority of application No. 201710724492.2 (CN), filed on Aug. 22, 2017.
Prior Publication US 2020/0332053 A1, Oct. 22, 2020
Int. Cl. C08G 18/76 (2006.01); C08G 18/12 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01)
CPC C08G 18/7671 (2013.01) [C08G 18/12 (2013.01); C08G 18/4018 (2013.01); C08G 18/4238 (2013.01); C08G 18/4825 (2013.01); C08G 18/4854 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for preparing a polyurethane polymer, comprising the steps of:
1) reacting a diol polymer with a difunctional isocyanate compound to prepare an isocyanate end-capped prepolymer; and
2) reacting an aminoimidazolinone-based compound with the isocyanate end-capped prepolymer of step 1) to obtain the polyurethane polymer;
wherein amounts of materials for step 1) and step 2) reactions by mole are:
diol polymer 2-5;
bifunctional isocyanate compound 3-6; and
aminoimidazolinone-based compound 1-3;
and wherein the aminoimidazolinone-based compound is 1-(2-aminoethyl)-2-imidazolinone.